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Sign structures for short-range RVB states on small kagome clusters

Tay, Tiamhock and Motrunich, Olexei I. (2011) Sign structures for short-range RVB states on small kagome clusters. Physical Review B, 84 (19). Art. No. 193102. ISSN 1098-0121. doi:10.1103/PhysRevB.84.193102.

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We extended the Schwinger boson construction to obtain wave functions that are resonating valence bond (RVB) counterparts of the degenerate coplanar classical states on the kagome lattice. We examined all 84 of them on the 36-site cluster and found that they form a narrow energy band. On the 12-site cluster, there are only four such states and their superpositions accurately account for the second through fourth exact diagonalization (ED) states, while the ED ground state is accurately reproduced by allowing a particular two-vison insertion on top of the q=0 RVB state. Thus, we have established the RVB sign structures for the low-energy states on this cluster.

Item Type:Article
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Motrunich, Olexei I.0000-0001-8031-0022
Additional Information:© 2011 American Physical Society. Received 2 October 2011; revised manuscript received 27 October 2011; published 14 November 2011. The research is supported by the NSF through Grant No. DMR-0907145.
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Issue or Number:19
Classification Code:PACS: 75.10.Kt, 75.10.Jm
Record Number:CaltechAUTHORS:20111209-132748123
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:28400
Deposited By: Tony Diaz
Deposited On:14 Dec 2011 16:52
Last Modified:09 Nov 2021 16:56

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